Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between FY3D and LANDSAT-8 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 7/18/2025
Index Date (FY3D) Time (FY3D) Lat,Lon (FY3D) SZA (FY3D ) Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Distance(km) Time Diff (sec)
1 07/18/2025 06:37:32 -75.99, -91.10 124.95 07/18/2025 06:37:50 -76.00, -91.20 124.94 3.10 18
2 07/18/2025 07:28:17 75.97, 76.25 55.05 07/18/2025 07:27:16 75.99, 76.39 55.06 3.97 61
3 07/20/2025 22:03:38 76.46,-144.25 55.97 07/20/2025 22:04:45 76.38,-141.75 55.97 65.74 67
4 07/20/2025 22:54:12 -76.00, 24.76 124.44 07/20/2025 22:54:20 -76.02, 24.72 124.43 1.91 8
5 07/20/2025 23:44:56 75.94,-167.73 55.52 07/20/2025 23:43:47 75.95,-167.85 55.51 3.38 69
6 07/23/2025 14:20:09 76.07, -26.91 56.16 07/23/2025 14:21:21 76.09, -26.82 56.18 2.87 72
7 07/23/2025 15:10:51 -76.02, 140.60 123.89 07/23/2025 15:10:49 -76.02, 140.60 123.89 0.27 2
8 07/23/2025 16:01:30 75.73, -51.10 55.87 07/23/2025 16:00:20 75.75, -52.57 55.83 40.44 70
9 07/26/2025 06:36:47 76.05, 89.08 56.72 07/26/2025 06:37:50 76.07, 89.02 56.74 3.09 63
10 07/26/2025 07:27:30 -76.00,-103.41 123.33 07/26/2025 07:27:19 -76.00,-103.55 123.33 3.89 11
11 07/28/2025 22:53:27 76.07,-155.10 57.36 07/28/2025 22:54:19 76.09,-155.03 57.38 3.02 52
12 07/28/2025 23:44:10 -76.02, 12.40 122.69 07/28/2025 23:43:48 -76.03, 12.41 122.68 0.90 22
13 07/31/2025 15:10:06 76.06, -39.14 58.00 07/31/2025 15:10:49 76.06, -39.26 58.00 3.30 43
14 07/31/2025 16:00:50 -76.05, 128.20 122.00 07/31/2025 16:00:17 -76.04, 128.33 122.02 3.77 33

Figure of FY3D and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/18/2025
SNOs_Map_FY3D_LANDSAT-8_20250718.jpg

Download SNOs between FY3D and LANDSAT-8 since TLE EPOCH: 07/18/2025 in txt file.

Historial Predications of SNOs between FY3D and LANDSAT-8